Double-acting oil well pump

Abstract

The invention relates to a double-acting oil well pump, and mainly solves the problem of low displacement of an existing conventional oil well pump. The double-acting oil well pump is characterized inthat an upper joint is connected with an upper oil inlet valve cover; an upper oil inlet valve seat is arranged in an annular hole formed in the lower portion of the upper oil inlet valve cover; thelower end of the upper oil inlet valve cover is in threaded connection with an upper oil inlet valve seat pressing cap; the bottom end of the upper oil inlet valve cover is connected with an outer connecting sleeve; the lower end of the outer connecting sleeve is connected with a pump cylinder joint; an oil outlet joint is arranged in the upper joint; an opening is formed in the middle of the oiloutlet joint; the lower end of the oil outlet joint is connected with an upper hollow pull rod; the upper hollow pull rod is connected with an inner connecting sleeve; an upper oil outlet valve coveris welded to the interior of the inner connecting sleeve; the lower end of the upper oil outlet valve cover is connected with an upper oil outlet valve cover joint; an oil outlet valve seat is arranged in the upper oil outlet valve cover; the inner connecting sleeve is connected with a lower hollow pull rod; and the lower end of the lower hollow pull rod is in threaded connection with a middle oiloutlet valve cover. Compared with the common oil well pump, the double-acting oil well pump has the advantages that the single well yield can be greatly improved, and the high-yield requirement of anoil well can be met.

Description

technical field [0001] The invention relates to a downhole tool used in the field of oil production in an oil field, in particular to a double-acting oil well pump. Background technique [0002] At present, the oil field has entered the late stage of high water cut. In order to maintain high and stable production, it is necessary to increase the liquid production rate of the oil well. However, the conventional oil well pump currently used only completes one oil suction and oil discharge action in one reciprocating stroke, and the pump displacement is low, which cannot meet the high production of the oil well. need. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the problem that the existing conventional oil well pumps in the background technology have low displacement and cannot meet the demand of high production of oil wells, and provide a double-acting oil well pump, which operates in a Two times of oil suct...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the problem that the existing conventional oil well pumps in the background technology have low displacement and cannot meet the demand of high production of oil wells, and provide a double-acting oil well pump, which operates in a Two oil suction and two oil discharge actions are completed during the reciprocating stroke, which can greatly increase the production of a single well compared with ordinary oil well pumps, and can meet the needs of high production of oil wells

Images